dik. log 3 =k, log 4=I,, log 5=m,, tntukan: a) 12 log 75, b) 45 log 120. bntu saya kka, dengan caranya,, logaritma.

Log 4=log 2²=2.log 2=l
Log 2=l/2
A. Log 75/log 12
=log 3.5² / log 4.3
=log 3 + 2.log 5 per log 4 + log 3
=k+2m / l+k
B. Log 120/log 45
=log 2³. 3.5 / log 3². 5
=3.log 2 + log 3 + log 5 per 2.log 3 + log 5
=3.l/2 + k + m / 2k+m
=3l+2k+2m / 4k+2m